Match composition and process of producing the same.



UNITED STATES PATENT OFFICE.

WILLIAM A. FAIRBURN, SHORT HILLS, NEW JERSEY, AND FREDERICK V. D. CRUSER, OF OSWEGO, NEW YORK, ASSIGNORS TO THE DIAMOND MATCH COMPANY, OF CHICAGO, ILLINOIS, A CORPORATION OF ILLINOIS.

MATCH COMPOSITION AND PROCESS OF PRODUCING THE SAME.

No Drawing.

To all whom it may concern:

Be it known that we, WILLIAM A. FAIBr' have invented certain new and useful Imrovements in Match Compositions and rocesses of Producing the Same, of which the following is a speclfication.

This invention relates to a composition for use more especially in the production of the safety bulb of double dipped matches It also relates toa process of producing the composition.

The primary object of our invention is to provide a match composition in which potassium chlorate and barium chromate are economicall formed and incorporated with the combustible, flaming and binding ingredients of the composition. Potassium chlorate is the material needed in the composition for supplying oxygen while the chromate has the beneficial effect of reducing the hygroscopic property of the binder.

In carrying out our invention in the preferred way, we mix with an aqueous paste of combustible, flaming and binding materials (such, for example, as sulfur, glue and resin) with or without the addition of inert substances (such as glass, whiting and silex) barium chlorate, barium hydroxid and potassium dichromate in the proportion oftheir molecular weights, adding a slight excess of barium hydroxid. These compounds being in solution, they react to roduce barium chromate and potassium c lorate and water which become intimately commingled with the other ingredients of the composition; that is to say, the barium chlorate and potassium dichromate react to produce potassium chlorate and barium dichromate, which latter in turn reacts with barium hydroxid to form barium chromate.

The following ingredients, in the proportions, by weight, specified have given good results, viz :barium chlorate 26 parts; potassium dichromate 24 arts; barium hydroxid 27 parts; glue 12 parts; resin 4 parts; sulfur 2 parts; fillers 14 parts, and water 70 parts.

Specification of Letters IPatent.

Patented, Jan. 7, 1919.

Application tiled September 28, 1915. Serial No. 58,013.

The preparation just described yields a COIIIIJOSIUOID indicated as .follows:

Barium chromate, approximately- 41 parts Potassium chlorate, approximately 20 Glue 12 Resin 4 Sulfur 2 Fillers 14 Water; 85

-It is not essential in our invention that all the potassium chlorate should be formed by the reaction as a certain amount may be added directly to the composition and only a portion formed by the foregoing explained reaction and the proportions may be varied at will, but in respect of the barium chlorate, barium hydroxid and potassium dichromate, it is important that they shall be used in the proportion of their molecular weights in order to secure the eflicient reaction above specified. I

Also in practising the invention, we find that it is advisable first to dissolve the barium chlorate in water, then to add the barium hydroxid and finally the potassium dichromate. Inth'is'way as the chromic acid is formed, by the reaction of the potassium dichromate on the barium chlorate, the chromic acid is neutralized instantly by the barium hydroxid which i in excess. This prevents the formation of chlorin which might have a detrimental effect upon the composition. A

It has heretofore been proposed in the manufacture of so-called headless matches to impregnate the end of the match stick a binder, the-barium chromate being resent in amount much greater than the amount of potassium chlorate.

2. A non acid match composition composed of barium chromate, potassium ch10- rate, sulfur, inert matter, and a binder, the barium chromate being present to the extent of about double the amount of the potassium chlorate.

3. A process of making a match composition which consists in mixing in the proportion of their molecular Weights barium chlorate, an alkali and potassium dichromate in solution, with combustible and flaming ma- 15 terial and a binder.

4, A process of making a match composition which consists in mixing in the proportion of their molecular weights. barium ch10- rate, barium hydroxid and potassium dichromate, in solution, with combustible and flaming material and a binder.

v 5. A process of making a match composition which consists in mixlng barium chlo rate, barium hydroxid and potassium dichromate in the proportion of their molecular Weights in an aqueous paste containing combustible and flaming material and. a

binder.

WILLIAM A. FAIRBURN. FREDERICK V. D. CRUSER. 

